diff --git a/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java b/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java
new file mode 100644
index 0000000..3875cb0
--- /dev/null
+++ b/jzo2o-api/src/main/java/com/jzo2o/api/market/CouponApi.java
@@ -0,0 +1,22 @@
+package com.jzo2o.api.market;
+
+import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+/**
+ * 内部接口 - 优惠卷相关接口
+ * @author JIAN
+ */
+@FeignClient(contextId = "jzo2o-market", value = "jzo2o-market", path = "/market/inner/coupon")
+public interface CouponApi {
+    /**
+     * 根据订单金额获取当前用户可用优惠卷
+     */
+    @GetMapping("/getAvailable")
+    List<AvailableCouponsResDTO> getAvailableCoupon(@RequestParam BigDecimal totalAmount);
+}
\ No newline at end of file
diff --git a/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/response/AvailableCouponsResDTO.java b/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/response/AvailableCouponsResDTO.java
index eca6906..71e2c3e 100644
--- a/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/response/AvailableCouponsResDTO.java
+++ b/jzo2o-api/src/main/java/com/jzo2o/api/market/dto/response/AvailableCouponsResDTO.java
@@ -3,12 +3,17 @@ package com.jzo2o.api.market.dto.response;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
+import lombok.experimental.Accessors;
 
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
 
+/**
+ * @author JIAN
+ */
 @Data
 @ApiModel("优惠券信息")
+@Accessors(chain = true)
 public class AvailableCouponsResDTO {
     @ApiModelProperty("优惠券id")
     private Long id;
@@ -16,34 +21,34 @@ public class AvailableCouponsResDTO {
     /**
      * 优惠券名称
      */
-    @ApiModelProperty(value = "活动名称",required = true)
+    @ApiModelProperty(value = "活动名称", required = true)
     private String name;
 
     /**
      * 活动id
      */
-    @ApiModelProperty(value = "活动id",required = true)
+    @ApiModelProperty(value = "活动id", required = true)
     private Long activityId;
 
-    @ApiModelProperty(value = "使用类型，1：满减，2：折扣",required = true)
+    @ApiModelProperty(value = "使用类型，1：满减，2：折扣", required = true)
     private Integer type;
 
     /**
      * 折扣
      */
-    @ApiModelProperty(value = "折扣",required = false)
+    @ApiModelProperty(value = "折扣")
     private Integer discountRate;
 
     /**
      * 优惠金额
      */
-    @ApiModelProperty(value = "优惠金额",required = false)
+    @ApiModelProperty(value = "优惠金额")
     private BigDecimal discountAmount;
 
     /**
      * 满减金额
      */
-    @ApiModelProperty(value = "满减条件,0:表示无门槛",required = true)
+    @ApiModelProperty(value = "满减条件,0:表示无门槛", required = true)
     private BigDecimal amountCondition;
 
     /**
@@ -51,4 +56,4 @@ public class AvailableCouponsResDTO {
      */
     @ApiModelProperty("优惠券过期时间")
     private LocalDateTime validityTime;
-}
+}
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java b/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java
new file mode 100644
index 0000000..59bc83b
--- /dev/null
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/controller/inner/CouponController.java
@@ -0,0 +1,39 @@
+package com.jzo2o.market.controller.inner;
+
+import com.jzo2o.api.market.CouponApi;
+import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
+import com.jzo2o.market.service.ICouponService;
+import io.swagger.annotations.ApiImplicitParam;
+import io.swagger.annotations.ApiOperation;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+import java.math.BigDecimal;
+import java.util.List;
+
+/**
+ * 内部接口 - 优惠卷管理控制器
+ * @author JIAN
+ */
+@Slf4j
+@RestController("innerCouponController")
+@RequestMapping("/inner/coupon")
+public class CouponController implements CouponApi {
+    @Resource
+    private ICouponService couponService;
+
+    /**
+     * 根据订单金额获取当前用户可用优惠卷
+     */
+    @Override
+    @GetMapping("/getAvailable")
+    @ApiOperation("获取可用优惠券列表")
+    @ApiImplicitParam(name = "totalAmount", value = "总金额，单位分", required = true, dataTypeClass = BigDecimal.class)
+    public List<AvailableCouponsResDTO> getAvailableCoupon(@RequestParam BigDecimal totalAmount) {
+        return couponService.getAvailableCoupon(totalAmount);
+    }
+}
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponService.java b/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponService.java
index b4b5853..fe4a955 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponService.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/service/ICouponService.java
@@ -1,6 +1,7 @@
 package com.jzo2o.market.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
+import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
 import com.jzo2o.common.model.PageResult;
 import com.jzo2o.market.enums.CouponStatusEnum;
 import com.jzo2o.market.model.domain.Coupon;
@@ -8,6 +9,7 @@ import com.jzo2o.market.model.dto.request.CouponPageQueryDTO;
 import com.jzo2o.market.model.dto.response.CouponPageInfoResDTO;
 import com.jzo2o.market.model.dto.response.CouponSimpleInfoResDTO;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 /**
@@ -37,4 +39,9 @@ public interface ICouponService extends IService<Coupon> {
      * 同步优惠卷数据到数据库中
      */
     void syncCouponRecord(long activityId, long userId);
+
+    /**
+     * 根据订单金额获取当前用户可用优惠卷
+     */
+    List<AvailableCouponsResDTO> getAvailableCoupon(BigDecimal totalAmount);
 }
\ No newline at end of file
diff --git a/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponServiceImpl.java b/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponServiceImpl.java
index 21caa0f..d857892 100644
--- a/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponServiceImpl.java
+++ b/jzo2o-market/src/main/java/com/jzo2o/market/service/impl/CouponServiceImpl.java
@@ -1,18 +1,21 @@
 package com.jzo2o.market.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
-import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.jzo2o.api.customer.CommonUserApi;
 import com.jzo2o.api.customer.dto.response.CommonUserResDTO;
+import com.jzo2o.api.market.dto.response.AvailableCouponsResDTO;
 import com.jzo2o.common.expcetions.BadRequestException;
+import com.jzo2o.common.expcetions.CommonException;
 import com.jzo2o.common.expcetions.DBException;
 import com.jzo2o.common.model.PageResult;
 import com.jzo2o.common.utils.BeanUtils;
 import com.jzo2o.common.utils.CollUtils;
+import com.jzo2o.common.utils.ObjectUtils;
 import com.jzo2o.market.enums.CouponStatusEnum;
+import com.jzo2o.market.enums.CouponTypeEnum;
 import com.jzo2o.market.mapper.CouponMapper;
 import com.jzo2o.market.model.domain.Activity;
 import com.jzo2o.market.model.domain.Coupon;
@@ -28,9 +31,12 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.annotation.Resource;
+import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.List;
+import java.util.Optional;
 import java.util.stream.Collectors;
 
 /**
@@ -137,4 +143,54 @@ public class CouponServiceImpl extends ServiceImpl<CouponMapper, Coupon> impleme
             throw new DBException("更新活动库存失败");
         }
     }
+
+    @Override
+    public List<AvailableCouponsResDTO> getAvailableCoupon(BigDecimal totalAmount) {
+        Long userId = Optional
+                .ofNullable(UserContext.currentUserId())
+                .orElseThrow(() -> new CommonException("用户信息不存在"));
+
+        List<Coupon> couponList = lambdaQuery()
+                .eq(Coupon::getUserId, userId)
+                .le(Coupon::getAmountCondition, totalAmount)
+                .eq(Coupon::getStatus, CouponStatusEnum.NO_USE)
+                .ge(Coupon::getValidityTime, LocalDateTime.now())
+                .and(and -> and
+                        .isNull(Coupon::getDiscountAmount)
+                        .or(or -> or.le(Coupon::getDiscountAmount, totalAmount)))
+                .list();
+
+        if (CollUtils.isEmpty(couponList)) {
+            return new ArrayList<>();
+        }
+
+        return couponList.stream()
+                .map(coupon -> BeanUtils
+                        .toBean(coupon, AvailableCouponsResDTO.class)
+                        .setType(coupon.getType().getType())
+                        .setDiscountAmount(this.calcDiscountAmount(coupon, totalAmount)))
+                // 默认BigDecimal的比较器排序从小到大 需要按优惠金额从大到小排序
+                .sorted(Comparator.comparing(AvailableCouponsResDTO::getDiscountAmount).reversed())
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * 计算优惠卷的优惠价格
+     * @param coupon      优惠卷信息
+     * @param totalAmount 订单总金额
+     */
+    private BigDecimal calcDiscountAmount(Coupon coupon, BigDecimal totalAmount) {
+        CouponTypeEnum type = coupon.getType();
+        BigDecimal discountAmount = BigDecimal.ZERO;
+
+        if (type == CouponTypeEnum.AMOUNT_DISCOUNT) {
+            discountAmount = coupon.getDiscountAmount();
+        } else if (type == CouponTypeEnum.RATE_DISCOUNT) {
+            // 1 <= coupon.getDiscountRate() <= 99
+            BigDecimal discountRate = new BigDecimal(String.format("0.%02d", 100 - coupon.getDiscountRate()));
+            discountAmount = totalAmount.multiply(discountRate);
+        }
+
+        return discountAmount;
+    }
 }
\ No newline at end of file